Setting up VNC on linux is surprisingly hard. Linod helped me figure this all out. Here is the story...
Server Side - x11vnc
A recommended article is from the folks that host linux virtual machines, linode. Their piece is what finally got me going. I tried x11vnc, and an excellent video: … [Read more...]

The Teensy 3.2 is an amazing small Arduino, and it uses a powerful ARM processor running at 96 MHz. One of the benefits of this part is that it has a multitude of sensor inputs (on the order of 12) that can be used as switches or similar sensors.
This is a plot from a sketch with approximately 1 ms sample rate (I think it is more like 10 ms … [Read more...]

Amazon has a pair of very inexpensive on the ear headphones that I thought would be perfect for a variety of low fidelity uses where I did not want to bother with in the ear/earbud type transducers. Also, it provides a good balance of noise blocking, comfort and bass response. These headphones, sold under their 'Basics' label are very inexpensive … [Read more...]

I've switched to using Adobe's CC photo sharing facility for sharing photographs with others. Although you can not add text, you can show a nice 'light table' image of all photos at once, and you can then click on photos that you like.
Here are the instructions on how to do this from Lightroom's help:
Step 1 of 6
Sign in to Lightroom
From … [Read more...]

Another learning project based on this Nordic Semiconductor product, NRF24L01 chip. Nordic, RF, 2.4 GHz part with really flexible and high bandwidth radio performance for digital sensor data.
Purchased a 6 pack from Amazon for very little Dollars - maybe only $4 per circuit board and trying to set up. From the problem solving post from 5 years … [Read more...]

I just got the version 'B' going this week and found several problems that could have been avoided if the built in SW was solid, or if there were installation/startup notes. I created a simple space frame built from structured components and used an linear 5 V supply. It is connected to an ASUS 27" HDMI monitor.
1. USB Hub
First, I had … [Read more...]